Composition shoe heel and method of making the same



Jan. 18' 192.7. v

` -J. A. .wn- ILHERINy COMPOSITI'Q SHOE HEELAND METHOD `0F MAKiNG -THESAME Filed August l, 1921 Patented Jamie, 1927.

UNITED STATE-S remesa PATENT OFFICE.

JAMES A. IUIIHERIN, OF ST. LOUIS, MISSOURI, ASSIGNOR, BY DIRECT ANDMESNE ASSIGNMENTS, T HENRY DELKESKAMP, OF ST. LOUIS, MISSOURI.

COMPOSITION SHOE HEEL'AND METHOD MAKING THE SAME.

Application led August 1, 1921. Serial No. 488,974.

This invention relates to shoe heels, and more particularly to heels ofthe composition type. l

One of the objects of this invention is to b provide 'a shoe heel whichpossesses the required strength, which can be readily attached to theshoe, which is adapted to receive a high finish, and to which theleather of the shoe sole can be readily attached.

Another object of this invention is to provide a process or method formaking such a heel.

Further objects will appear from the detail description taken inconnection with the accompanying drawing in which the figure is across-section of a shoe heel embodying this invention.

The shoe heel elnbodying this invention comprises a body 1 of plasticmaterial and a coating 2 which is combined therewith to form a compositemass. In the case of high A heels, a core 3 is provided in order'tosecure the desired strength' and this core extends from the seat tothetread., The core is formed of wood or any other suitable Inaterialwhich is adapted to be penetrated by a fastener'` such as a nail or lascrew. The body l is a rubber composition and is preferably formed of aligneous materialwhich is mixed and vulcanized with the rubber.

In the particular embodiment of this invention the body comprisessaw-dust, cork and raw rubber in the roportion of about seventy-tive percent (E570) of saw-dust, five per cent (5%) of cork and twenty per centof raw rubber. The coating 2 is of'hard rubber which `is vulcanized onthe body., y

In accordance with theprocess embodying this invention the saw-dust,cork and -raW rubber are mixed and placed in a mold around the core andthe body is then molded under pressure While subjected to a vulcanzingheat. This may be accomplished in any suitable vulcanizing mold which,as usual, may be heated by steam. It will, of

course, be understood that a suitable'amount I ofsulphur may be added tothe mixture to secure proper vulcanization of the body.

The body being formed to shape is now coated with alayer of hard rubber;this may be accomplished by forming a hard rubber sheet (made inaccordance with any suitable hard rubber formula) around the formedbody; the coated body is then placed in a mold and again subjected topressure at a vulcanizing heat, whereby the coating Will not only runtogether to form a Continuous surface covering but Will also combineWith the body to form a composite 00 mass.

Where the heel is provided With a top lift I which may be attached tothe bod-yv by any l i suitable fastener, such as a nail 5 driven intothe core, it will be unnecessary to coat the body tread; furthermore itwill be unnecessary to coat the seat 6 of the heel. Moreover where as isoften the case especially in high heels the sole is pasted against thebreast 7 of the heel, it will be unnecessary to cover this breast. Itwill be understood, therefore, that the covering is applied to suchfaces as may be necessary to meet the requirements and to adapt the heelto the uses as desired.

Itvvill, therefore, be seen that the invention accomplishes litsobjects. A heel is provided Which is a composite mass. The body of theheel not only has great strength but the required density and lightnesson account of the large proportion of saw-dust used in its manufacture.This body moreover is adapted to receive the nails or other fasteningmeans and on account of the intimate mixture of the components of thevulcanized body and the nature of the vulcanized miX- 35 ture, it isadapted to firmly retain the nails or other fastenings which may beused. In lo\v heels, therefore, it is unnecessary to use the core sincethe fasteners may be driven .directly into the composite vulcanized heelbody. Moreover the body is of such a nature that it will readily takecement. Accordingly the heel can be conveniently cemented to the shoe;this characteristic is especially advantangeous in that it permits theflap on the sole to be cemented against the heel breast as is usual inwooden heel constructions. The coating not only forms a hard protectivecovering but also one which is adapted to receive a high polishandpresents a neat appearance. p

It Will be noted that the core 3 terminates a short distance below theseat of the heel thereby providing an open recess 8. This makes thestruct-ure resilient since the body will give slightly when the Weightof the foot comes onV the heel, which resiliency is. desirable' in heelconstructions.

It is obvious that various changes may be made in details ofconstruction Without no vl. A shoe heel, comprisin a vulcanized mixtureof sawdust, cork an rubber.

2. A shoe heel, comprising, a body of plastic material having'a coreextending from its 4seat to its tread, and a coating combined therewithto forma composite mass.

3. A `shoe heel, comprising, a core, and a composition body of rubberand granular material vulcanized on said core.

4. A shoe heel, comprising, a core, a body of rubber compositionvulcanized on said core, and a coating of rubbervvulcanized on saidbody.

'5. In the art of making shoe heels, the process comprising, moldin abody of plastic material, coating the bo y with hard rubber, and moldingthe coated body While subjected to a vulcani/zing heat.

6. In the art of making shoe heels, the process comprising, molding abody of plastic material While subjected to a vulcanizing heat, coatingthe body with hard rubber, and molding the coated body While sub jectedto a vulcanizing heat.

In testimony whereof I aix my signature tliis`19th day of July, 1921.

JAMES A. MULHERIN.

